A diver demonstrates the painful consequences of stepping on a sea urchin, revealing how its sharp spines penetrate the skin and the challenges of removing them. The video highlights the importance of ...

Diadema Savignyi A recent visitor came out of the sea with more than 400 sea urchin spines stuck in his body, according to marine biologist Dr. Terney Pradeep Kumara. In another incident, a foreigner ...

Beachcombers along the Texas coast were in for a treat this past week as numerous Sand Dollars washed up along the shoreline.

Sea urchins have a variety of external organs that can be found in among the spines. The photograph below is of the oral area of a regular sea urchin. The most important external organs are the ...

The sea-urchin Tylocidaris clavigera has highly characteristic club-like spines. This specimen is 80-83 million years old and originates from the Upper Cretaceous Chalk in southern England.

Katie Cresswell senior research fellow at IMAS with a long spine sea urchin. Katie has conducted research into the impact of commercial fishing of the long spine sea urchin population. Picture ...